Daikin VRV IV+ - Page 90

18 | Piping installation
Installer and user reference guide
90
REYQ8~20+REMQ5U7Y1B
VRV IV+ heat recovery
4P561154-1A – 2020.10
To close the stop valve
1 Remove the stop valve cover.
2 Insert a hexagon wrench into the stop valve and turn the stop valve clockwise.
3 When the stop valve cannot be turned any further, stop turning.
4 Install the stop valve cover.
Result: The valve is now closed.
To handle the stop valve cover
▪ The stop valve cover is sealed where indicated by the arrow. Do NOT damage it.
▪ After handling the stop valve, tighten the stop valve cover securely, and check for
refrigerant leaks. For the tightening torque, refer to the table below.
To handle the service port
▪ Always use a charge hose equipped with a valve depressor pin, since the service
port is a Schrader type valve.
▪ After handling the service port, make sure to tighten the service port cover
securely. For the tightening torque, refer to the table below.
▪ Check for refrigerant leaks after tightening the service port cover.
Tightening torques
Stop valve size
(mm)
Tightening torque (N•m) (when opening or closing)
Valve body Hexagonal wrench Service port
Ø9.5 5~7 4mm 10.7~14.7
Ø12.7 8~10
Ø15.9 14~16 6mm
Ø19.1 19~21 8mm
Ø25.4